Abstract: Abstract: With the gradual improvement of the requirement of power service and marketization of the power industry， how to reasonably trade and effectively utilize power has become a key requirement for China. Due to the centralized trade mode in the traditional power system， there are many problems， such as long-term processing， high trading cost， lack of supervision， potential attack risk， which means that the adaptive trading business processing rules and workflow are required. As an innovative information technology， blockchain has combined the advantages of decentralization， immutability， data provenance and contract operation automatically， which can be used to solve the abovementioned issues. Taking the individual credibility and liveness into account， a feature modeling based bidding trading mechanism in power blockchain is proposed. This approach fully mobilizes the enthusiasm and initiative of nodes， which can save amount of intermediary cost and reduce behaviors of breaching promises. In addition， the secure and effective trading service of power is provided. The corresponding trade is deployed under the smart contract with distributed mode. The experimental results using Hyperledger demonstrate that the proposed mechanism is feasible and effective， which can be applied to large scale power trading business scenarios.

Key words: Key words: power blockchain, feature modeling, bidding, trading, smart contract